Hose coupling



Aug. 14,1945.

H. C. KRONE EF HOSE COUPLING I Filed Deb. 9. 1945 r. a WW EM 4 l4 INVENTVORS:

I flaw 1011 ATTORNEY.

Patented 14, 1945 cl'ersey 'lip litautnbe nt 9, 1943,, Serial No. 513.518

- Gl'aims. 01. 285-1'69') r actuating-position; and helda therein thezdetent This invention relates, tolimbrovements. in hose couplings; and'jthe invention. has reference. more particularly; to'an improvedtcouplingj oiithe telescopic type,,i .-e. one infwhich'itsmal'eand female membersare engaged'by pushing thev one. into the other.

, invention n arer," an. tweet. to, provide a telescopic coupling structure having novel means" f'orl'ockin'g. its male and'female members,

. when joined together, against separation, wherein said means" comp'rises'radially movable latch meanscarried'bythe female member and adapted to" engage in socket: means withwhi'ch the male member" is provided, said latch meansflbein spring pressed to normal initial released position, and thus so as tobe; normally withdrawn. item the path ofrrlov'ement"ofthe" male member when the latter is" entered in' or'withdrawn; from the female member; and said female'me rriber b'eingtprcvidediwithan exterrral slide ringm-anipulatable to engage and move the latch" means to latching engagement with; the ma le member, and to' posi tively reta-in said latch means in such latching position; I Q

The invention hasfor anotherob' ject'tqprovid-e a telescopic couplingstructure of the kind-mentiOn'ed Wherein the slide rihg'is provided with de= tent meansforholding" the same-in latch-means actuated position against accidental displace- Qther objects. of; 'thi's'inventiong not at'this time more particularly enumerated, will Ice-understood from the: following: detailed description o'i' the same. v

. An illustrative embodiment at the 1 invention is shownyinthe accompanying drawing; :in: which: 1 ,Fig; 1 is. a side elevational View part. section of. the male member of the: coupling structure; and 2 is 'aqsid'eelevational; VlEW' in; part. section' oi] the female member'of. Sar'ldlG015lp1lIlg: strum tune. I

i. u I Fig, 3; isa a, cross-sectional; view, taken: omlin'e 3 -3v in Fig. 2;, showing; the latch; meansinmormal initialreleasedaposition.. j l h 4 is a longitudinal sectional view of the male. and; female members of the couplingstructure as. operatively joinedtogether. and locked against separation} and Fig: 5 is? a cross-sectional viewshowing'a detentmeanswith'whiclr the slide ring. oi the coupling. structure'is', provided',.- said 5 PATENT r a v $3 1 962 I I v. i U y Y PHQSECOUPLEIG -1 A '-';fmwm e: Kmnei'it'iver Edge, and William Mover;

East Orange; N; J16; assignors to Wheaten Brass ".W'crks,v NewarmNl J., a corporation of'Ne'w slide ring. being shown retracted tonlatch means releasing; position; t and; Fig. .7; is at sin-iilar View slide ring; ,adrancedtto latch meane spending parts. a

means. n

Fig. 8 is a fragmentary viewusimilartothahogf Fig.1, but showingxan. alternative iormi of detent means;

Similar characters- 013 reference are'tlemployed in the above described; vieWs,; to indicate, cor-re:

Referring to the drawing, the reference character [10 indicates the male: member of the-coupling structure; the same being suitably constructed; to be affixed. to a. tankoutlet, a hose'section or other fluid. conduit means. For example said male member, as shown, is providedat itsrearward end withan. internally, screw-threaded socket; lit to receive the/threaded end ll of; atank outletnozzle. At its forward end, the.. ma1e-- member is provided with aspigot portion; I33; usually at cylindrical shape. V Formed. in theexternal surf-ace of said spigot portion. 13 is anla'nnular channel or latch socket 14., which isspacedinwardly from thefreeendthereoi. U

Thereference character he ,mdicateshthe iemale member of the coupling structure, the same being suitably constructed to be afiixedto. a hose sectionor other fiuidconduit. means For example, said female member, as show n is' provided at its. rearward end with an: internally screw threaded socket l\6.-to. receive the threadedend H of alunionmember l8..connected"with the end of alhose section I9. At itsforward'end thei'emale -member is, provided with al bell'fporti'on" 207,]the

the interior of'the bell portion Ell, so" as to be spaced from the side" walls of the latter. 'iiuaid packing ring 24; isheld' firmly" and tightly to the seating face orshoulder" 26 by the extremity" of the threaded end H" of the hose union member 18 asentered inthesocket I 6 of the femalemember I 5; or, ifdesired; a separate lockingring'may-he screwed: into the socket l'6- ahead of the gnaw-1- fof thehose union member; or independent or such other means as may be provided fcirattach ing the female coupling member I5 to a hose or other fluid conduit means, as is well known to the art. Preferably said packing ring skirt tapers in wall thickness toward its free edge, so as to be sensitively responsive to expansion by internal pressure of fluid flowing through the coupling structure. To cooperate with said packing ring skirt, the spigot portion I3 of the male coupling member is provided with an internal countersunk annular seating face 26 of conformable taper, and limited at its inner end by a shoulder 21, behind which the free edge of the packing ring skirt 25 is disposed, when entered in the end of the spigot portion I3 at the time the male coupling member is entered in the female coupling member. The internal diameter of the packing ring and its skirt is somewhat greater than the internal diameter of the spigot portion l3, and consequently said shoulder 21 protects or guards the free edge or lip of the skirt against passage of fluid beneath the latter so as to deflect the same from' sealing contact with the seating face 25, and therefore the internal pressure of fluid flowing through the coupling structure is solely directed perpendicular to the internal surface of the packing ring skirt 25, whereby to press the same firmly into sealing contact with the seating face 26 of the male member spigot portion I3 with which it cooperates.

The means for locking the coupling members, when joined together, against separation comprises one or more latch pieces radially movable in transverse housing openings 30 provided in the walls of the bell portion 20 of the female member. Preferably at least two latch pieces in diametrically opposed relation are employed. Each latch piece comprises an arcuate body 3| of a width corresponding to the width of the annular latch socket I4 of the male member spigot portion I3, and of a height exceeding the wall thickness of the bell portion 20 of the female member, said body having, at its respective ends, inwardly presented flat base faces 32 disposed in a transverse plane parallel to the axis of the coupling structure. The respective ends of the housing openings 30 provided in the walls of the bell portion 20 of the female member likewise terminate in fiat seating faces 33, also disposed in a transverse plane parallel to the axis of the coupling structure. Formed in the walls of the bell portion 20, to open outwardly from the flat seating faces 33 thereof, are socket cavities 34 perpendicular to the planes of the latter, and footed in said socketcavities 34 are compression springs 35 which thrust outwardly against thebase faces 32 of the latch piece bodies 3I.

Slidably mounted on the female coupling member I5 is a manipulatable slide ring 36. This slide ring is provided, in its internal face, with an annular latch piece receiving channel 31, the rearward wall of which is chamfered to provide an inclined cam portion 33. The external rear-'- ward margin of each latch piece body 3I is cor-. respondingly chamfered to provide an inclined cam portion 39 cooperative with the cam portion 38 of said slide ring 36. When the slide ring 36 is retracted to latch means releasing position, its receiving channel 3'! will be aligned with the latch piece bodies 3I, so that the latter, under the thrust of the springs 35, will be moved bodily in outward radial direction and thus into said receiving channel 31. Such outward movement laterally withdraws the inner marginal portions of the latch piece bodies 3| out of the interior of the bell portion 26 and beyond or at least flush with the inside surfaces thereof, thus normally leaving the bell portion interior free of obstruction, so that the spigot portion I3 of the male member ID can be freely entered or withdrawn therefrom, as the case may be (see Figs. 2 and 3).

Means is provided for both properly limiting the sliding movements of the slide ring 36, as well as to detain or hold the same against accidental withdrawal from its advanced latch means actuating position. Such means, in one form there of, comprises an outwardly open countersunk guideway 40 formed and suitably located in the external surface of the female member I5. Threaded through said slide ring 36 is a stop screw 4|, the end 42 of which is entered in said guideway 4I, wherebyabutment thereof against the rear end of said guideway arrests rearward movement of the slide ring 36 and determines its retracted latch means releasing position, and abutment thereof against the forward end of said guideway arrests forward movement of the slide ring and determines its advanced latch means actuating position. Said stop screw M is provided with an axial bore 43 in which is carried a detent ball 44 urged by a compression spring 45 toward the bottom of said guideway 40, said spring being backed by a closure screw 46 threaded into the outer end of said bore. Formed in the floor of said guideway 40 adjacent its forward end is a depressed seat 47 into which the detent ball 44 is thrust and yieldably held when the slide ring 36 is advanced to latch means actuating position, whereby to retain said slide ring in such position against accidental displacement therefrom (see Fig. 7).

If a more positive detent means is desired, a modified form thereof such as shown in Fig. 8 may be utilized, wherein, instead of a detent ball carried by the stop screw M, a bolt piece 48 is provided to engage a correspondingly shaped bolt socket or seat 49 in the floor of the guideway 40. The bolt piece 48 is urged to holding position by a compression spring 52, and said bolt piece is provided with a pull stem 50 slidably projecting through the outer end of the stop-screw 4|; said stem having a pull knob or finger piece 5| on its external end, by means of which the bolt piece 48 may be manually withdrawn from slide ring locking position.

From the above description, it will be understood that when the slidering 36 is retracted to the limit of its rearward movement, the receiving channel 31 will be aligned with the latch piece bodies 3 I, so that the compression springs 35 will yieldably force the same'outwardly into said receiving channel 31 of the slide ring, thus withdrawing said latch piece bodies out of the bell portion 2|] of the female member, so as to leave the path'of movement of the male member spigot portion I3 into said bell portion free from obstruction (see Figs. 2 and 3). With the female member thus prepared for the reception of the male member. the spigot portion I3 of the latter is slid telescopically into the bell portion 26 of said female member until it is stopped in en gagement with the internal rib'or flange 2i of the latter, and so as to be operatively engaged by the skirt 25 of the seal ring 24, in which posit1on its annular latch socket I4 is aligned with and opposed to the retracted latch piece bodies 3|. The male member having'been thus engaged in the female member, the slide ring 36 of the latter is slid forward to the limit of its advancing movement. As the slide ring 36 is advanced, its cam 38 engages and thrusts against the cam portions-39 of the latch" piece bodies 3|, thereby moving said latch piece bodies radially inward against the tension of the springs 35, so

that the same enter into the latch socket M of th'e'male member spigot portion 13, thereby'interlocking the male and female members together against separation, (see Figs, 4 and 5). It will observed, that the, forward displacement of the 'receivingchannel 31 of-th'e slide ring 36 engages theinside surface of'the slide ring body directly with the outside surface of the latch piece; [bodies 3|, so that the latter are firmly backed by the ring and thus positively held against displacement from their entered position within the latch socket l4, and consequently against release from theirlooking or holding relation to the male member. Since the slide ring 36 is held by a detent means against accidental retraction,

it will be obvious that a very secure interlocked relation of the joined male and female coupling members is assured.

Having'now described our invention, we claim: '1. A coupling comprising a male member having aspigot portion, said spigot portion having an external annular latch receiving channel, a few male memberhaving a bell portion to'telescopically receive the spigot portion of said male member, said female member having tr'ansverse hous- I ing openings piercing opposite wall portions thereof to communicate with the bel portion interior, said housing openings terminating in flat seating faces disposed in transverse planes substantially parallel to the axis of the coupling, arcuate latch 'pieces radially movable in said "housing openings, said. latch pieces having at their opposite ends fiat basefaces opposed to the seating, faces of said housing openings, the walls of said female member having socket cavities substantially perpendicular to, and opening out of x the seating faces at said housing opening ends,

-,compression springs in saidcavities adapted to respectivelythrust against the respective base faces of said latch pieces toyielolably thrust the latter outwardly to released. position flush with the inner surfaces of said female member bell portion, whereby the same arenormally withdrawn from the path, of 'moveme'nt'of the male member spigot portion into and out of the bell portion of said female member; and a manipulative'externalslide ring mounted on saidfemale member, said ring having an internal annular channel adapted, when said ring occupies a retracted position, to be alignedwith and to receive the outwardly thrust latch pieces, said ring and latch pieces having co-operative cam, portions operative to move said latch pieces into the receiving channel of themale member spigot portion entered inthe female memberv bell portion when said ring is advanced, said ring, when advanced, being adapted to positively hold said latch pieces in such locking position. j

[2. A coupling as defined in claiml including an internal annular stop flange bounding the inner end of the female member bell portion, an

annular packing ring seated against the back of said flangesaid packing ring having a forwardly projecting flexible skirt portion extending over said flange to overhang the interior wall surfaces of said female member bell portion, and said male member spigot portion having an annular seat within its free end to receive said packing ring skirt, said seat being bounded by a shoulder adapted to guard'the free edge of said skirt when said skirt is engaged in said seat. I

3. A coupling comprising a male member having a spigot portion, said spigot portion having an external annular latch receiving channel, a female member having a bell portion to telescopically receive the male member spigot portion, said female member bell portion having a transverse housing opening piercing'the wall thereof to communicate with its interior, said housing opening having flat seating face at its ends disposed in transverse plane substantially parallel to the axis tively -thrustagainst the respective base faces of i said latch piece, whereby to yieldablythrust the latter outwardly through said housing opening to normally dispose the inner arcuate surface of said latch piece flush withthe internal surface of the female member bell portion, and a manipulatable external lide ringmounted on said female member, said ring'havingan annular channel adapted, when said ring occupies a retracted position, to be aligned with and to receive the outwardly thrust: latchpiece, said ring and'latch piece having cooperative cam portions operative to move said latch piece into thereceiving channel of the male member spigot portion as entered in the femalemember bell portion when said ring is advanced, said ring, when advanced, being adapted to positively hold said latch piece in such locking position.

4. A coupling as defined in claim'3, including cooperative stop and detent means between said slide ring and female member operative to limit the movements of said ring and to releasably hold the same against accidental I displacement from latch piece locking position,

5; A coupling as defined in claim '1, including cooperative stop and detent means between said' slide ring and female member operative to limit the movements of said ring andto releasably hold I the same against accidental displacement from latch piece locking position.

HOWARD c. KRONE.

WILLIAM MEYER. 

